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(No Model.) 4 sheets-sheet 1.

W. H. DODGE 8v Gr. PHILION.

LATHB.

No. 359,853. Patented Mar. 22, 1887-.

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(No Model.) 4 Sheetsmsheetl 2. W. H. DODGE 8v G. PHILION.

LATHB.

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W. H. DODGE 8v G. IPHILION.

LATHB. N0. 359,858. Patented Mar. 22,- 1887.

(No Model.) 4 Sheets-Sheet 4.

W. H. DODGE 8a G. PHLION.

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Patented MM.. 22, 1887.

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N. Pneus. Pham-unwanpho NITED STATES PATENT Oriana.

VALLAOE H. DODGE AND GEORGE PHILION, OF MISHAVAKA, 1ND.,ASSIGN ORS TOTHE DODGE MANUFAOTURNG COMPANY, OF SAME PLACE.

LATH E.

SPECIFICATION forming part of Letters Patent No. 359,853, dated March22, 1887.

Application filed October 2, 12386t Serial No. 215,136. (No model.)

To @ZZ whom it may concern:

Be it known that we, VALLAGE H. DODGE and GEORGE PHILioN, of Mishawaka,in St. Joseph county and State of Indiana, have invented new and usefulimprovementsin lathes for turning and boring Wood, and particularly tothe turning and center-boring of wooden pulleys; and l. do herebydeclare that the following is a full and accurate description of thesame as we have constructed it for the manu facture of the pulleysnamed, but Without intending to be limited to the exact details shownand described.

In the manufacture of Wooden pulleys the rims are built up77 Withseveral rings, each composed of four or more segments cut from suitableboards or planks, the whole being solidly glued together. The blankpulley-rim so constructed is then, as the basis for future operations,turned true and square interiorl y. The arms are subsequently inserted.The hub is bored, and the interior periphery is turned off and finishedas a final operation.

The first object of our invention is to accurately scribe the exactinterior diameter described on the blankdim; second, to turn theinterior surface true to diameter and truly cylindrical;third, after thearms have been inserted, to bore the hub true as to center. Uniformityas to diameter and cylindric surface may he attained, and themanufacture will be facilitated.

In the accompanying drawings, Figure l is a perspective of ourinvention. Fig. 2 is a front end eleva-tion of the same. Fig. 3 is arear elevation of the mandrel-post. Fig. et is a side elevation of ourlathe. Fig. 5 isaplan of the sanne, the chuck being shown in section.Fig. 6 is an elevation, partly in section, of the worm feed-gear. Fig. 7is a plan of the same. Figs. 8 and 9 are details of the caliper-scriber.Fig. l0 is an elevation, partlyin section,show ing the center-pin forthe tool-stock carriage.

A. is the bed-frame or plate of the machine, to which we prefer to boltpillars B O, as shown in Figs. 2, 3, 4, and 5,) though said pillars maybe bolted directly to the door, as shown in Fig. 1.

The bed-plate A is provided with a longitudinal slot, a2, to receive theholding-bolts b2, whereby the pillar C is held in place. It is desirableto make only one of said pillars adjustable, and as the pillar l carriesthe inaudrel and band-pulley it is more convenient to fasten itpermanently and make the pillar C adjustable. The pillar B supports themandrelshai't d for the pulley c and face-plate or chuck E. The pillar Csupports the mechanism for scribing, turning the pulley, and boring thehub. The face-platef may be solid, or a skeleton, as preferred; but Weprefer to make as a skeleton frame to make it as light as possibleconsistent with strength. The radial arms g of the face-plate are eachprovided with a radial groove, undercut or dovetailed, and bars i h arefitted to move therein. The bars h move in radial guides intheface-plate f, and at their inner ends are in engagement with thescroll-plate D, which is journaled on the hub of and behind thefaceplate, so that rotation of said scroll-plate causes the arms h lisimultaneously and uniformly to move out or in, as the case may be. 'K

A jaw-piece, E, is fitted io cach of the hars It and made adjustablethereon, so that they can be placed nearer to or farther from the centerto adapt them to recciveand chuck objects of different sizes. lt isconvenient to attach each jaw E by an undercut or dovetail slidingconnection,aud provide hol es 'i at stated intervals in each bar h., sothat the jaws may be shifted and all secured in place equidis tant fromthe center by pins in certain of said holes. Other suitable means forlocking the jaws in place may be employed, if preferred, such as clamps,set-screws, e.

The post C is provided with the horizontal guideway or table F, indirection parallel with the face-plate j', and a carriage, P, is mountedon said table to travel on the guide thereof, and a screw, k, is placedon said table to move said carriage back and forth and hold it in anyposition desired.

The earriageP has mounted upon it the toolstock H, which travels 4in aguideway, ai, on said carriage, in the plane of the axis of the shaft d,so that when the carriage P is in one position on its guideway the toolt, held by the stock H, may move back and forth in a line coincidentwith said axis, and when said carriage is at any other place on saidguide, the

a hand-Wheehp, and pinion q in gear with` said rack, whereby it may bemoved in or out; but when the tool is in action it encounters acontinnally-changing resistance and the handwheelp cannot insure auniform progress. We

have therefore pnt a Worm-gear, r, at the bot-k tom of the shaft of thehand-Wheel p, and provide a worinscrew, I), to engage said Wernigear tofeed the tool-stock with an unyielding pressure. The bearing for theWorm-gear bis mounted on a plate, u, which is provided with` ahandwlever, c, and cam c2, or other device, whereby said plate and theWornrscrew may be moved into or out of engagement with the pinion i'quickly. The hand-wheel p is used to move the tool-stock when the toolis out of` action, `andthe Wormgear, for reasons stated above, is usedto move it while in action.

At the rear of the table F there is perinanently mounted on said table aguide-frame, V, with a guideway parallel with the guide m and a slidingstock, lw, therein. This stock w carries at its frontend a gage-bar, y,graduated in inches or otherwise, to indicate standard measurements fromthe axis of revolution. It is also provided with ascribing knife orpoint, z, adjustable as to said bar so far that said scribing-blade maybe moved to and fixed at any desired point on said bar, and said stock wmay then be advanced until said blade engages the surface of the pulleyX, or other ob.- ject held by the chuck-jaws E, and marks thereon acircle of the exact diameter required.

u This tool is for a guide for setting the turning- .tool. Forconvenience We provide said stock on its under side with a cograck, asshown in Fig. 9, `and cause the same to engage with a pinion, '102,which is mounted on the shaft of a hand-Wheel, w3.

When the pulley-rim X is placed in the chuck-jaws E, if the cuttingtoolhas not already been set for the exact internal diameter required, thescriber is set at 'the exact radial distance from the center, and stockw being advanced the required circle is marked on the edge of thepulley-rim. The carriage Pis then moved along its guideways F until thecuttingtool exactly reaches said scribed line. The stock H is thenadvanced by the Worm-screw b and gear lr, and the inner surface of thepulley-rim will be turned out truly cylindrical and of the exactdiameter. be necessary to use the scriber again until it Thereafter itwill not is necessary to change the tool-stockffor a different diameter.

In the manufacture of Woodenpulleys the internal face is turned outinthe Way above described before the arms are inserted.` They are thenrechuclred, placing the rim in the 7o same marks previously made by thejaw E, and thus assuring approximately the same centering, and aboring-tool being placed in the tool-stock H the center hole for theshaft is bored. The exterior surface for the pnlley- 7 5 face may alsobe turned off in the same Way, and by a tool similar to the tool forturning the inside of the pulley-rim.

It is sometimes desirablei to cause the tool to travel in aline obliqueto the axis of man- 8o drel rotation, so as to produce a conicalsurface, and We have therefore placed a plate, G, between the carriagel?and the guideways of the table F. The plate G has on its under side thegibway to fit the guide F. At its center, on theupper side, it isprovided with acenter-pin, T. (Shown by dotted lines in Fig. 5 and inFig. l0.) The carriage turns upon said center-pin, and is provided withclamping-` bolts a, which extend down through slots m', 9o (shown bydotted lines in Fig. 5,) to clamp said carriage fast to the plate in thedesired angular position. y

Having described our invention, We claim as new- 95 l. In a machine forturning therinis and bor-` ing the hubs of pulleys and the like, theguide- Way F, transverse to the axis of rotation, and the scribing-barmounted` to lnove on the `table e in a guideway parallel withsaid axis,comroo bined with the carriage I), `mounted to move on said gnideway F,transverse to the axis of rotation, and the tool-stock H fitted to moveon the carriage I? in the plane of and parallel l with said axis. 2. Thereciprocating toolstock H, provided with the cog-rack a, and thehandwheel p, provided with the pinion q, combinedwith the worm-gear i'on the shaft of said pinion, and l the worm-screw b, mounted `on themovable rio plate u, substantially as set forth.

3; In a boring and turning machine, amandrel, a tool-carriage adaptedtoimove in a direction transverse to the axis` of revolution of l themandrel, and` a scribing-stock havinga movement parallel with said axisof revolu tion, combined with ascribingblade adjustable on said stocktoward or away from said axis of revolution, for the purpose set forth.

4. A machine for turning pulleyrims, borr2o ing the hubs and the like,comprising a bed-i plate, A, two pillars, B and C, relatively adajustable on said bed-plate, the pillar B being pro vided with a mandrel,rotating scrollplate, and faceplate f, provided with bars h, radi.- allyadjustable thereon and controlled by said scroll-plate, and `jaws E,adjustable onfsaid` bars, and the pillar C being provided with a;

transverse gnideway, F, and a sWiveling-carl radial movement of saidbars the chuck may 1o ringe and a tool-stock adapted to move thereon Ibe adapted to receive and hold blanks of voli toward or away from theface-plate, as set ions sizes, and either central or eccentric.

fort-h. 4

5. The faee-pmcef, combined with the Scron- WALLACE H' DODGE' plate D,the radial bars Il. in engagement with said plate and radiallyadjustable in guides on i vWitnesses:

said face-plate; and the jaws E, adjustable on said bars, whereby with nsmall and uniform GEORGE PHILON.

XV. B. HOSFORD, M. W. Mix.

